Cita APA (7th ed.)

Wold, H. (1981). The Fix-point approach to interdependent systems. North-Holland.

Cita Chicago (17th ed.)

Wold, Herman. The Fix-point Approach to Interdependent Systems. Amsterdam: North-Holland, 1981.

Cita MLA (9th ed.)

Wold, Herman. The Fix-point Approach to Interdependent Systems. North-Holland, 1981.